:root {
    color-scheme: dark;
    --bg: #08081b;
    --surface: #11102b;
    --surface-raised: #171338;
    --line: #38315f;
    --text: #f8f7ff;
    --muted: #a8a2c2;
    --blue: #3e8bff;
    --pink: #f06aa7;
    --violet: #9872ff;
    --cyan: #32d0ff;
    --success: #75e096;
    --gold: #edc56a;
    --red: #ff7b8b;
    --shadow: 0 24px 70px rgba(0, 0, 0, .38);
    font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }
body { margin: 0; min-height: 100vh; background: radial-gradient(circle at 96% 84%, rgba(100, 35, 111, .42) 0, transparent 35rem), radial-gradient(circle at 8% 4%, rgba(36, 75, 167, .18) 0, transparent 30rem), var(--bg); color: var(--text); }
button, input, select { font: inherit; }
button { cursor: pointer; }

.topbar { max-width: 1240px; margin: 0 auto; padding: 42px 28px 24px; display: flex; align-items: center; justify-content: space-between; gap: 20px; }
h1, h2, p { margin: 0; }
h1 { font-size: clamp(1.9rem, 4vw, 3.2rem); letter-spacing: -.055em; line-height: 1; }
h2 { font-size: 1.25rem; letter-spacing: -.025em; }
.eyebrow { color: var(--pink); font-size: .75rem; font-weight: 800; letter-spacing: .17em; margin-bottom: 10px; }
.title-accent { color: var(--blue); }
main { max-width: 1240px; margin: 0 auto; padding: 12px 28px 60px; }

.primary-button, .secondary-button, .danger-button, .icon-button, .text-button { border: 0; border-radius: 12px; min-height: 44px; padding: 0 17px; font-weight: 750; }
.primary-button { background: linear-gradient(105deg, var(--blue), var(--violet)); color: #fff; box-shadow: 0 8px 26px rgba(62, 139, 255, .22); }
.primary-button:hover { filter: brightness(1.12); }
.logout-link { color: var(--muted); text-decoration: none; font-size: .85rem; font-weight: 700; }
.logout-link:hover { color: var(--text); }
.secondary-button { background: #1a1739; color: var(--text); border: 1px solid var(--line); }
.danger-button { background: #6e292d; color: #ffe5e5; }
.icon-button { width: 44px; padding: 0; background: transparent; color: var(--muted); font-size: 1.7rem; }
.text-button { min-height: 36px; padding: 0 10px; background: transparent; color: var(--muted); }
.text-button:hover { color: var(--text); background: #211b49; }
.text-button.danger:hover { color: var(--red); }

.summary-grid { display: grid; grid-template-columns: 1.25fr 1fr 1fr .7fr; gap: 14px; }
.summary-card { position: relative; min-height: 150px; padding: 22px; border: 1px solid var(--line); border-radius: 18px; background: rgba(23, 19, 56, .8); display: flex; flex-direction: column; overflow: hidden; }
.summary-card::before { content: ''; position: absolute; inset: 0 0 auto; height: 3px; background: var(--violet); }
.summary-card:nth-child(2)::before { background: var(--pink); }
.summary-card:nth-child(3)::before { background: var(--cyan); }
.summary-card:nth-child(4)::before { background: var(--violet); }
.summary-card.accent { background: rgba(20, 11, 46, .88); border-color: rgba(62, 139, 255, .74); }
.summary-card.accent::before { background: var(--blue); }
.summary-card span { color: var(--muted); font-size: .87rem; font-weight: 650; }
.summary-card strong { display: block; margin: auto 0 4px; font-size: clamp(1.5rem, 2.5vw, 2.3rem); letter-spacing: -.045em; }
.summary-card small { color: var(--muted); font-size: .75rem; }

.workspace-heading { margin: 38px 0 15px; display: flex; align-items: end; justify-content: space-between; gap: 20px; }
.workspace-heading p { color: var(--muted); margin-top: 6px; }
.filter-field { display: flex; align-items: center; gap: 10px; color: var(--muted); font-size: .85rem; }
select, input { width: 100%; min-height: 44px; border: 1px solid var(--line); border-radius: 10px; padding: 9px 11px; background: #0d0c24; color: var(--text); outline: none; }
select:focus, input:focus { border-color: var(--blue); box-shadow: 0 0 0 3px rgba(62, 139, 255, .14); }
.filter-field select { width: 160px; }

.account-list { display: grid; gap: 14px; }
.account-card, .loading-card, .empty-card { border: 1px solid var(--line); border-radius: 18px; background: rgba(17, 16, 43, .92); box-shadow: var(--shadow); overflow: hidden; }
.account-card:nth-child(4n + 1) { border-color: rgba(62, 139, 255, .62); }
.account-card:nth-child(4n + 2) { border-color: rgba(240, 106, 167, .62); }
.account-card:nth-child(4n + 3) { border-color: rgba(152, 114, 255, .62); }
.account-card:nth-child(4n) { border-color: rgba(50, 208, 255, .62); }
.loading-card, .empty-card { padding: 50px 24px; text-align: center; color: var(--muted); }
.account-main { display: grid; grid-template-columns: minmax(220px, 1.35fr) repeat(3, minmax(140px, .8fr)) auto; gap: 24px; align-items: center; padding: 22px; }
.account-title { display: flex; gap: 13px; align-items: center; }
.account-mark { display: grid; place-items: center; width: 43px; height: 43px; border-radius: 13px; background: rgba(62, 139, 255, .2); color: var(--blue); font-weight: 850; }
.account-card:nth-child(4n + 2) .account-mark { background: rgba(240, 106, 167, .18); color: var(--pink); }
.account-card:nth-child(4n + 3) .account-mark { background: rgba(152, 114, 255, .18); color: var(--violet); }
.account-card:nth-child(4n) .account-mark { background: rgba(50, 208, 255, .16); color: var(--cyan); }
.account-title h3 { margin: 0 0 4px; font-size: 1.1rem; }
.account-title p { color: var(--muted); font-size: .82rem; }
.status-badge { display: inline-flex; align-items: center; gap: 6px; margin-top: 9px; color: var(--success); font-size: .76rem; text-transform: capitalize; }
.status-badge::before { content: ''; width: 6px; height: 6px; border-radius: 50%; background: currentColor; }
.status-badge.closed { color: var(--muted); }
.status-badge.matured { color: var(--gold); }
.metric span { display: block; color: var(--muted); font-size: .75rem; margin-bottom: 5px; }
.metric strong { font-size: 1.03rem; }
.metric small { display: block; color: var(--muted); font-size: .73rem; margin-top: 4px; }
.account-actions { display: flex; gap: 2px; }
.period-toggle { width: 100%; border: 0; border-top: 1px solid var(--line); background: rgba(9, 8, 29, .55); color: var(--muted); padding: 12px 22px; text-align: left; font-weight: 700; }
.period-toggle:hover { color: var(--text); }
.period-panel { padding: 0 22px 20px; background: rgba(9, 8, 29, .55); }
.period-panel[hidden] { display: none; }
.period-toolbar { padding: 14px 0 10px; display: flex; justify-content: space-between; align-items: center; }
.period-toolbar h4 { margin: 0; font-size: .88rem; }
.period-table { width: 100%; border-collapse: collapse; }
.period-table th { color: var(--muted); font-size: .72rem; text-transform: uppercase; letter-spacing: .06em; text-align: left; padding: 10px 8px; border-bottom: 1px solid var(--line); }
.period-table td { padding: 12px 8px; border-bottom: 1px solid rgba(56, 49, 95, .68); font-size: .84rem; }
.period-table tr:last-child td { border-bottom: 0; }
.period-table .actions { text-align: right; white-space: nowrap; }
.period-state { color: var(--gold); font-size: .75rem; }
.period-state.complete { color: var(--success); }

dialog { color: var(--text); }
dialog::backdrop { background: rgba(0, 0, 0, .72); backdrop-filter: blur(5px); }
.editor-dialog, .confirm-dialog { width: min(720px, calc(100vw - 28px)); max-height: calc(100vh - 28px); border: 1px solid #5f3da4; border-radius: 20px; padding: 0; background: var(--surface); box-shadow: var(--shadow); }
.editor-form { padding: 24px; }
.dialog-heading { display: flex; justify-content: space-between; align-items: start; margin-bottom: 22px; }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 15px; }
.form-grid label { display: grid; gap: 7px; color: var(--muted); font-size: .8rem; font-weight: 650; }
.form-grid .wide { grid-column: 1 / -1; }
.dialog-actions { display: flex; justify-content: flex-end; gap: 10px; margin-top: 22px; }
.form-error { min-height: 20px; margin-top: 12px; color: var(--red); font-size: .82rem; }
.calculation-preview { min-height: 0; margin-top: 16px; padding: 13px; border: 1px solid rgba(62, 139, 255, .42); border-radius: 12px; background: rgba(62, 139, 255, .12); color: #dce9ff; font-size: .82rem; }
.calculation-preview:empty { display: none; }
.confirm-dialog { width: min(420px, calc(100vw - 28px)); padding: 28px; text-align: center; }
.confirm-dialog p { color: var(--muted); margin: 10px 0 0; line-height: 1.5; }
.confirm-icon { display: grid; place-items: center; width: 44px; height: 44px; margin: 0 auto 16px; border-radius: 50%; background: #53262a; color: var(--red); font-weight: 900; }
.toast { position: fixed; right: 24px; bottom: 24px; transform: translateY(100px); opacity: 0; padding: 13px 17px; border: 1px solid var(--blue); border-radius: 12px; background: #1a2252; color: #e7efff; box-shadow: var(--shadow); transition: .2s ease; }
.toast.visible { transform: translateY(0); opacity: 1; }
.toast.error { background: #54272b; border-color: #8f4148; color: #ffe5e5; }

.login-page { display: grid; min-height: 100vh; place-items: center; }
.login-shell { width: min(440px, calc(100% - 32px)); padding: 30px 0; }
.login-card { padding: 34px; border: 1px solid rgba(152, 114, 255, .7); border-radius: 22px; background: rgba(20, 11, 46, .94); box-shadow: var(--shadow); }
.login-card h1 { font-size: 2.2rem; }
.login-mark { display: grid; place-items: center; width: 52px; height: 52px; margin-bottom: 28px; border-radius: 16px; background: linear-gradient(135deg, var(--blue), var(--pink)); color: #fff; font-size: 1.5rem; font-weight: 900; box-shadow: 0 10px 28px rgba(240, 106, 167, .2); }
.login-copy { margin: 12px 0 26px; color: var(--muted); line-height: 1.5; }
.login-form { display: grid; gap: 16px; }
.login-form label { display: grid; gap: 7px; color: var(--muted); font-size: .85rem; font-weight: 650; }
.login-form .primary-button { margin-top: 4px; }
.login-error { color: var(--red); font-size: .85rem; }

@media (max-width: 960px) {
    .summary-grid { grid-template-columns: 1fr 1fr; }
    .account-main { grid-template-columns: 1.5fr 1fr 1fr auto; }
    .account-main .metric:nth-of-type(3) { display: none; }
}

@media (max-width: 680px) {
    .topbar { padding: 28px 18px 18px; }
    main { padding: 8px 18px 42px; }
    .topbar .primary-button { width: 44px; padding: 0; font-size: 0; }
    .topbar .primary-button span { font-size: 1.4rem; }
    .topbar { flex-wrap: wrap; }
    .topbar > div { flex: 1; }
    .logout-link { order: 3; width: 100%; text-align: right; }
    .summary-grid { grid-template-columns: 1fr 1fr; gap: 10px; }
    .summary-card { min-height: 128px; padding: 17px; }
    .summary-card strong { font-size: 1.3rem; }
    .workspace-heading { align-items: start; flex-direction: column; }
    .filter-field, .filter-field select { width: 100%; }
    .account-main { grid-template-columns: 1fr auto; gap: 18px; }
    .account-main .metric { grid-column: 1 / -1; display: block !important; }
    .account-main .metric:nth-of-type(2), .account-main .metric:nth-of-type(3) { display: none !important; }
    .account-actions { grid-column: 2; grid-row: 1; }
    .period-panel { overflow-x: auto; }
    .period-table { min-width: 650px; }
    .form-grid { grid-template-columns: 1fr; }
    .form-grid .wide { grid-column: auto; }
    .editor-form { padding: 20px; }
}